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Comprehensive technical documentation covering: - Hardware: OCS/ECS/AGA custom chip registers, Copper & Blitter deep dives - Boot sequence: cold boot through startup-sequence - Binary format: HUNK executable spec, relocation, debug info - Linking & ABI: .fd files, LVO tables, register calling conventions - Exec kernel: tasks, interrupts, memory, signals, semaphores - AmigaDOS: file I/O, FFS/OFS layout, CLI/Shell scripting - Graphics: planar bitmaps, Copper programming, HAM/EHB modes - Intuition: screens, windows, IDCMP, BOOPSI - Devices: trackdisk, SCSI, serial, timer, audio, keyboard - Libraries: utility, expansion, IFFParse, locale, ARexx - Networking: bsdsocket API, SANA-II, TCP/IP stack comparison - Toolchain: GCC, vasm/vlink, SAS/C, NDK, debugging - Reverse engineering: IDA/Ghidra setup, compiler fingerprints, case studies - CPU & MMU: 68040/060 emulation libs, PMMU, cache management - Driver development: SANA-II, Picasso96/RTG, AHI audio All files include breadcrumb navigation. No local paths or proprietary content.
50 lines
1.1 KiB
Markdown
50 lines
1.1 KiB
Markdown
[← Home](../README.md) · [Libraries](README.md)
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# layers.library — Window Clipping Layers
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## Overview
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`layers.library` provides the clipping and damage-repair infrastructure that Intuition windows are built on. Each window's `RastPort` is backed by a `Layer` that manages overlapping regions.
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---
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## Layer Types
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| Flag | Type | Description |
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|---|---|---|
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| `LAYERSIMPLE` | Simple Refresh | Application must redraw damaged areas |
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| `LAYERSMART` | Smart Refresh | System saves obscured regions |
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| `LAYERSUPER` | Super BitMap | Application provides full-size bitmap |
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| `LAYERBACKDROP` | Backdrop | Behind all other layers |
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---
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## Key Functions
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```c
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struct Layer_Info *li = NewLayerInfo();
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struct Layer *layer = CreateUpfrontLayer(li, bitmap,
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x1, y1, x2, y2, LAYERSMART, NULL);
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/* Lock before drawing: */
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LockLayer(0, layer);
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/* ... draw into layer->rp ... */
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UnlockLayer(layer);
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/* Move: */
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MoveLayer(0, layer, dx, dy);
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/* Resize: */
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SizeLayer(0, layer, dw, dh);
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/* Cleanup: */
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DeleteLayer(0, layer);
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DisposeLayerInfo(li);
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```
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---
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## References
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- NDK39: `graphics/layers.h`, `graphics/clip.h`
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